Vex vs Katarina Mid Matchup

Vex Mid wins 55.8% of 2,717 Low Elo games against Katarina Mid, +2.9 points vs expected, 2-patch window 26.19-26.20.

Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.

Why Vex is favored

Katarina's frequent Shunpo(E) dashes trigger Vex's Doom 'n Gloom(P), letting Vex fear her and interrupt the next entry. Vex can also use her range and waveclear to deny Katarina the roams that normally create her lead.

How to play as Vex

Keep your empowered fear ready for Katarina's E and push the wave when she looks for a roam; do not spend the fear casually before her entry.

Doom 'n Gloom(P) marks nearby enemies when they dash and empowers Vex's next ability to fear them, making Katarina's Shunpo(E) engage easier to punish.

Mistral Bolt(Q) and Looming Darkness(E) give Vex longer-range waveclear than Katarina's dagger pickup pattern, helping her keep the wave pushed.

How to play as Katarina

Bait Vex's empowered ability before using E to engage, and avoid repeated dashes while her fear is ready; punish after she spends it to clear or poke.

Sources

These notes come from r/vexmains, checked against the champions' abilities.